MOJAQMD RULE 476 STEAM GENERATING EQUIPMENT
LAST REVISED 03/16/81
(Adopted: March 16, 1981)
Rule 476
Steam Generating Equipment
(a) A person shall not discharge into the atmosphere from any
equipment having a maximum heat input rate of more than 12.5
million kilogram calories (50 million BTU) per hour used to
produce steam, for which a permit to build, erect, install
or expand is required after May 7, 1976, air contaminants
that exceed the following:
(1) Oxides of nitrogen, expressed as nitrogen dioxide
(NO2), calculated at 3 percent of oxygen on a dry basis
averaged over a minimum of 15 minutes, as shown in the
following table:
FUEL GAS LIQUID OR SOLID
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CONCENTRATION 25 ppm NO 225 ppm NO
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(2) Combustion contaminants that exceed both of the
following two limits:
(A) 5 kilograms (11 pounds) per hour.
(B) 23 milligrams per cubic meter (0.01 gr/SCF)
calculated at 3 percent oxygen on a dry basis
averaged over a minimum of 15 consecutive minutes.
(b) Nothing in this rule shall be construed as preventing the
maintenance or preventing the alteration or modification of
existing steam generating equipment which will not increase
the mass rate of air contaminant emissions.